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Enter 180+30 degrees.
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<td>eg.Calculator</td>

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<td>key</td>

<td>x()</td>
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<td>180</td>

<td>&nbsp;</td>
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<td>30</td>

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<td>+</td>

<td>&nbsp;210.000</td>
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<p>See <a href="http://fit.c2.com/wiki.cgi?AllPairsExample">AllPairsExample</a>.
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